MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 258

• Manufacturer Part Number: MC68HC908KX2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Monitor ROM (MON)
Technical Data
258
DB-25
10 F
10 F
2
3
7
+
+
NOTE:
1
3
4
2
5
6
MC145407
While the voltage on IRQ1 is at V
the external square-wave clock becomes the clock source. Dropping
IRQ1 to below V
the clock source selected by the ICG (as determined by the settings in
the ICG registers).
Figure 18-1. Normal Monitor Mode Circuit
20
18
17
19
16
15
+
+
10 F
10 F
Monitor ROM (MON)
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
TST
V
1
2
6
4
7
DD
will remove the bypass and the MCU will revert to
MC74HC125
0.1 F
14
3
5
V
DD
TST
OSCILLATOR
9.8304-MHz
CANNED
, the ICG module is bypassed and
0.1 F
0.1 F
V
10 k
1 k
10 k
10 k
DD
V
V
V
TST
DD
DD
V
DD
PTA1 (
PTB0 (PTXMOD0)
RST (PTB7/OSC2)
IRQ1
V
V
OSC1
PTA0
DD
SS
68HC908KX8
MOTOROLA